Bobbin holder



Nov. 11, 1924- G. W. DOVER BOBBIN HOLDER Filed N09. 13, 1922 INVENTOR. 62cm: W 170 R ATTORNEY Patented Nov. 11, 1924.

GEORGE WILLIAM DOVER, OF CRANSTON, RHODE ISLAND, ASSIGNOR ONE-HALF TO JO'HN MONTGOMEBY, OF WOONSOCKET, BYE-103E ISLAND.

BOBBIN Application filed November To all whom. it may concern:

Be it known that I, GEORGE W. Down, a citizen of the United States, residing at- Cranston, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Bob bin Holders, of which the following is a specification.

This invention relates to an improved bobbin holder for use in connection with textile machinery wherein thread or yarn is supplied upon bobbins and removed therefrom for the purpose of twisting, weaving, etc.

One object of the present invention is to provide a device of this character for rotatably supporting a bobbin which will permit the bobbin being placed thereon or removed therefrom readily and expeditiously, and reduce the resistance to the r0 tation of the bobbin to the lowest practicable point consistent with preventing the overrunning of the bobbin in unwinding the thread therefrom.

Another object of the invention is to provide a device of this character wherein means is provided for varying the frictional resistance to the rotation of the bobbin as may be desired dependent upon the conditions under which the same is to be employed.

A further object of the invention is to provide a novel form of bobbin holder comprising spindle and sleeve members wherein means is provided for resisting separation of the spindle and sleeve members upon the application of moderate force thereto while permitting such separation upon the application of an adequate increased force.

Other objects and advantages of the invention relate to certain details of construction and arrangement of the parts as will be more fully set forth in the detailed description to follow.

Referring to the drawings:

Fig. 1 is a side elevational view, partially in section, showing the bobbinholder with a bobbin positioned thereon.

Fig. 2 is a side elevational view of the holder, tilted slightly as in the position occupied when used for the purpose of supporting a bobbin for drawing threads therefrom for twisting.

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13, 192-2. Serial No. 600,510.

Fig. 3 is a detail view of a portion of the spindle.

Fig. 4 is a detail perspective vie'w'of ajportion of the sleeve, certain portions being broken away to more clearly disclose the structure, and,

Fig. 5 is a detail sectional view of'a portion of a modified form of spindle.

In the construction of bobbin holders of the type described herein it is desirable to provide a structure wherein the operating parts are so positioned as to prevent the access of dust and lint thereto, while at the same time so formed as to permit the bobbin being positioned thereon or removed therefrom readily and suitably support the bobbin in its appropriate position with. the least possible resistance to the rotation of the bobbin consistent with the prevention of undue overrunning of the same while unwinding the thread therefrom.

In the embodiment of the invention illustrated herewith 1 designates the usual rest rail for supporting the bobbin holding devices, and 2 a spindleprovided with a threaded-portion 8 threaded in the'rest rail. I

The spindle 2 is provided at its upper end with a conical recess 4, and an annular'rim 5 extending upwardly from and surrounding'the conical recess 4. A second recess 6 is formed in the end of the spindle 2 extending downwardly centrally of the first named recess, the purpose of which will be more fully set forth hereinafter.

A sleeve 8 is mounted for rotation about the spindle 2 and comprises a main'body portion 9 of tubular form and a top portion 10 which in the present instance comprises a solid block though it may obviously be built up of separate parts or suitably recessed or cored if deemed'desirable.

The top portion 10 is provided with a' rounded exterior surface as indicated at 11 for facilitating the positioning of a bobbin thereover and has a reduced portion 12 which in the present instance is forced into the upper end of the tubular member to form a suiiiciently close fit to hold the parts firmly together and prevent movement of the same relative to each other, but it is of course understood that any other suitable or desired means for connecting the tubular portion 9 of the sleeve with the top por tion 10 thereof may be employed as ciroumstances may} require or varying conditions of use render expedient.

A reduced shoulder 14 ext-ends down wardly from the reduced portion 12 and fits within the annular rim 5 to form therewith a substantial closure for the space surrounded by the rim 5. A further reduced portion 15 projects downwardly from the reduced shoulder 1a and carries a conical projection 16 fitting within the conical recess 4. The sides of the downwardly projecting portion 15 may be considerably reduced as indicated at 17 to form an enlarged space 18 substantially closed by the annular rim 5 and shoulder 14c which serves as an oil reservoir for supplying lubricant to the bearing surfaces 4 and 16. The bea-"ing surfaces 4: and 16 are preferably given the same angle of inclination which permits contact throughout the greatest extent of their cooperating surfaces and tends to maintain the sleeve against angular movement relative to the spindle while at the same time permitting the sleeve to pivot about the point of support where the bearing is located. The recess 6 is provided to serve as a means for varying the frictional resistance between the sleeve and spindle, the greater the diameter of the recess 6 the smaller will be the extent of the cooperating bearing surfaces between the conical recess 4 and the conical projection 16 and vice versa.. 'llhus by giving the recess 6 the requisite diameter the frictional resistance bet-ween the bearing surfaces may be varied as desired and so modified as to be adapted for varying conditions under which the structure may be employed. The recess 6 also acts in conjunction with the space 18 above the conical projection as an oil reservoir for supplying lubricant to the bearing surfaces, which reservoir being substantially closed by the cooperating elements, shoulder 14 and rim 5, retains the lubricant therein while pre venting dust or lint from gaining access thereto.

While in the present instance the cooperating bearing surfaces are shown as being located adjacent to the upper end of the sleeve member 8 and the top portion of the bobbin 20 positioned thereupon, it is to be understood that the cooperating bearing faces may be located either higher or lower relative to the bobbin by correspondingly shortening the spindle 2 and lengthening the top portion 10 of the sleeve member or vice versa.

The spindle 2 is provided with an enlarged portion 22 intermediate its ends, which in the present instance is formed by pressing out the metal of the spindle fron points 23 and 2 1, although any other suitsurable or desired method of thus providing an enlargement upon the spindle may be employed or a separate element secured upon the spindle at this point as conditions of manufacture may make expedient. A depression 25 is formed in the tubular portion 9 of the sleeve 8 at an appropriate point to be located below the enlargement 22 on the spindle when the parts are in assembled posi tion, the depression 25 being formed in the present instance by spinning in the metal of the sleeve circuirferentially although the de pressed portion may obviously be formed in other ways and by other methods. The lower end portion of the sleeve 8 is provided with a plurality of longitudinal slots 26 e i the metal is divided into a plurality of flcmole elements 28 each. of which has formed therein a portion of the circumferential depression 25 and the flexible elements cooperate with the enlar ed portion 22 of the spindle to provide means for resisting the separation of the sleeve and spindle upon the applica 'on of moderate force theretowhile permitting such separation upon the application of increased force. This construction prevents the separation of the parts in dotting the bobbin while permitting their separation for the purpose of repair or to replenish the lubricant or for such ot ner purposes as may be necessary. The sleeve 8 is provided with a flaring base portion 30. against which the base of the bobbin 2O adapted to rest when positioned upon theslee 'e to support the bobbin upon the sleeve in proper position for the unwinding of the yarn or thread therefrom. A cup-shaped member 31 is located above the rest rail 1 and surrounds the base of the bobbin to prevent the thread or yarn from becoming wound about or entangled with that portion of the spindle 2 or sleeve 8 which projects below the base of the bobbinin the event that the bobbin does at any time overrun the yarn or thread being removed therefrom.

In F 5 of the drawings is shown a slightly modified form of spindle member, in which 1 designates the rest rail, 32 the spindle member provided with a threaded end portion threaded in the rest rail. The spindle 82 is provided with a reduced portion adjacent to the threaded portion 33 and immediately below the enlarged portion formed on the spindle. A sleeve 36 is fitted closely over the reduced portion 3 1 and may be held against rotation relative to the spindle by being forced tightly against the upper surface of the rest rail when the spindle is threaded therein. lhe purpose of the sleeve 36 is to prevent the depression 25 of the sleeve from wearing into one side of the spindle, especially when the spindle is mounted at an angle to the vertical as shown in 2, and as the sleeve 36 becomes worn upon one side the danger of excessive tilting of the bobbin may be overcome by loosening the spindle in the rest rail and slightly rotating the sleeve 36 to bring an unworn portion of the sleeve 86 into the position where the greatest wear from the depressed portion of the sleeve is experienced.

If desired the sleeve 36 may be loosely mounted upon the reduced portion 34 of the spindle 32 so as to rotate slowly under the influence of the depression 25 bearing thereportion provided with a circular shoulder and a conical projection extending downwardly from said shoulder and seated in the conical recess in said spindle, said rim and shoulder cooperating to form an oil reservoir adjacent to the conical bearing surfaces.

2. In a bobbin holder, a spindle provided rith a conical recess formed in one end thereof and having an annular rim extending upwardly therefrom, and a sleeve rotatable about said spindle and having a top portion provided with a circular shoulder and a conical projection extending downwardly from said shoulder and seated in the conical recess of said spindle, said conical projection being reduced in size between said shoulder and the conical surface thereof to form an enlarged oil reservoir adjacent to the conical bearing surfaces.

3. In a bobbin holder, a spindle provided with a conical recess formed in one end thereof, and a sleeve supported by said spindle for rotation therearound and provided with a top portion having a conical projection extending downwardly therefrom for engagement with the conical recess of said spindle, the said spindle being provided with a second recess extending downwardly from said conical recess the cross section of which may be made greater or less initially to decrease or increase the effective area of one of the conical bearing surfaces.

4. In a bobbin holder, a spindle provided with an enlarged portion, a relatively thin metal sleeve mounted for rotation about said spindle and provided with a depressed annular portion adapted to contact with the enlarged portion of said spindle to resist separation of said sleeve and spindle.

5. In a bobbin holder, a spindle provided with an enlarged portion, a relatively thin metal sleeve mounted for rotation about said spindle and provided intermediate its ends with an annular depressed portion adapted to contact with the enlarged portion of said spindle to resist separation of said sleeve and spindle, and an outwardly flaring base portion for supporting a bobbin.

6. In a bobbin holder, a spindle provided with an enlarged portion, a relatively thin metal sleeve mounted for rotation about said spindle and provided intermediate its ends with an annular depressed portion adapted to contact with the enlarged portion of said spindle to resist separation of said sleeve and spindle and an outwardly flaring base portion for supporting a bobbin, and a cupshaped member secured to said spindle below the metal sleeve and having the edge thereof extending upwardly above the lower edge of said sleeve.

In testimony whereof I have aflixed my signature.

GEORGE WILLIAM DOVER. 

